Stuffing-box.



E. L. MILLS. STUPPING BOX. APPLICATION rmzn 001.26. 1008.

Patented Mar. 30, 1909.

"tibial g UNI E STATES PATENT ormca snwann' 1.. MILLS, or Los month's,camroanu.

'1 '0 all whom it may concern:

Be it known that I, Enwnn L. Minus, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Smiling-Boxes,of which the following is a specification.

This invention consists in a device adapted to revent the How of fluidfrom a well whi e drilling operations are being carried on. It is oftenthe case that drilling must be done when fluid under ressure is seekingexit at the top of the Wei l and unless some provision is made for stopg this flow, the fluid, such as valuable o. 15 lost, besides creatinggreat iIlCOIlVcDiGHCB.

The main object of construction-in the present invention has been toobviate all wear on the drilling line, while at the same time to providea perfectly ti ht joint and prevent all fluid flow. Vith t is 111 View asleeve is secured around the line, the'sleeve movin with the line. A.sliding connection is ma 0 between the sleeve and the well casing, thisconnection being'fluid tight. Theline is thus allowed to move freelywithout any wear and without the escape of fluid from the hole.

In the accompanying drawings forming a nut of this specificationz-Jigure1 isa ongitudinal sectionof my device. 1'" 2 is an enlarged crosssection taken on dine 2-2 of Fig. 1. v J

In the drawings 5 designates the drilling line and 6 the upper part ofthe well casing, my invention being applicable to any size and characterof line and easing. Mountedon the casing is a cap 7 having at its centerand upper part on ordinary stalling box. 8, the portion ar constructionof the stufiing box not entering into the present invention.

sleeve 9 of some len th is adapted to work vertically in the stu ng box,a collar 10 being,' provided to prevent the sleeve from disengagementwith the box. This sleeve is screwed into a sleeve 11 at its upper end,the clamp sleeve being hollow and carrying two c am rsegments 12 withinit. shouldered portion 13 at tile top of the Wits prevents theiraccidental disengagement and The line passes between the mgnu-nls and ahand arrow 14- is used to tighten the clamps on the line, the wholemovable part ofthe stalling box being thus i Specification of Letter!Patent. Application fled October 88, 1905. Intel In. LIN.

secured to the line and forced to reciprocate vertically with it. Theline passes loosely throu h the sleeve and any fluid might pass arounthe line and out through the clamps if it were not for the (provision ofstufling box 15 on the upper en of the clam sleeve. This stufii box iscomprised in abo y mem- Patented March so, 1900.

he; 16 having an upwardly extending screw threaded sleeve 17 into whicha compression sleeve 18 is forced by a nut '19 surrounding sleeve 17 andin screw threaded engagement therewith. Packing 20 within the stuflingbox is thus held in tight engagement with the line and any fluid flowthereb Y prevented.

In the use of my stufling 01: the line is first. passed through it asillustrated, the

lower end of the line being connected to the The tools are then loweredrations of drillin aving been szre'we drilling tools. into the well andthe o rocwded with, cap 7 into the casing and stufling box 15 tightcmdup. When the tools are withdrawn stufiing box 15 is loosened so that theline may pass through it easily and cap 7 is unscrew from the casing.The whole device remains in position by its own weight until the toolscome to the surface when it is lifted and carried by them up into thederrick.

The gist of this invention consists in the provision of separate meansfor securing to the line and for allowing the vertical movement thereof.The minor details, as to relative placement of the parts, maybe variedto suit the needs of any particular case. For instance, the up erstutling box' may be placed below the c. amps for some purposes y 1 Iclaim 1. A stufling box adapted for use in combination with a stationarywell pipe and a drilling line reciprocating therein, comprising a sleevesurrounding the line and project'ing within the pipe. sliding connectivemeans between the sleeve andthe lpe, stop means to prevent the entirewitln rawnl of.

the sleeve fronrthe pi pe, a clamp on the sleeve for securing the linetherein, and a st ufiing box rcmovably mounted on the sleeve andsnmmnding the line to prevent the passage of fluid between the line andsleeve.

2. A stuiiing box, adapted for use in combination with astntionary \vcllpipe and a drilling line recipiu-nting therein. comprising a sleevesnrroundi g the line and pro- I \viihin he pipe, sliding connective; Inwitness; thug I claim (11? foregoing I nwm iwtmevu the skew and thcpipe, 3 Z luv-ii haw-nun SHhriL'l'ihPd my name this 20th p m; ihe shove.for securing thv line 3 day of ()ranhcr i903.

5 run a siuiii lg box removubly nmunt- Q EDWARD L. MILLS.

E nu :w .Jmh: imivpa'ndcmiy of the clamp

